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(No Model.) 2 Sheets-Sheet 1. T. W. TETLEY.

MUSIC LEAP TURNER. Nd. 403.792. Patented May 21 1889..

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UNITED STATES PATENT OFFICE.

THOMAS XVALSH TETLEY, OF SHEFFIELD, COUNTY OF YORK, ENGLAND.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Patent No. 403,792, dated May 21, 1889.

Application filed October 9, 1888. Serial No. 287,622. (No model.)

To all whom it may concern:

Be it known that I, THOMAS WALSH TETLEY, a subject of the Queen of Great Britain and Ireland, an d residing at Sheffield, in the county of York, England, have invented certain Improved Means or Mechanism for Automatically Turning Over the Leaves of Books and the Like, of which the following is a specification.

The object of this invention is to turn the leaves of books automatically, and the apparatus is particularly adapted to books constructed somewhat similar to photographic albums, the pages of which may be mounted with printed matter and illustrations suitable for advertising purposes; and it consists in constructing mechanism somewhat similar to that of a clock, which may be operated by a coiled spring or other means, and combining therewith a rotating arm which acts 011 each revolution 011 one of a series of balanced arms, each balanced arm being in connection with a leaf of a book, and so mounted on cranks secured to a revolving shaft that as the shaft revolves the balanced arms on one side the shaft are moved gradually toward the center of the same and away from the shaft 011 the other side, so that the revolving arm can operate each balanced arm and leaf consecutively until all the leaves have been turned over. Then the motion of the revolving arm is re versed and the operation repeated.

In the accompanying drawings, Figure 1 represents a front view of a case suitable for fixing my apparatus thereto, and Fig. 2 a side view of the same drawn to a reduced scale.

The mechanism for accomplishing my objeet is illustrated by side elevation by Fig. 3, and plan by Fig. i, Fig. 5 representing an enlarged end view of the apparatus. Fig. 6 on Sheet 2 is a section through line Z Z, Fig. 9, showing the gears for operating the rotating arm 5 Fig. 7, a view of the opposite side, showing the gears in connection with the shaft on which are secured a series of cranks; Fig. 8,

a side view of a balanced arm; Fig. 9, a plan showing a few of the balanced arms and part of the apparatus, and Figs. 10 and 11 an end elevation and plan of the shaft with cranks thereon.

The book to be operated upon is by preference prepared with thick paper or card-board leaves, and is laid on the shelf A of the case, the connection between the mechanism and leaves of the book being made through the semicircular opening A through the front of the case A The frame 13, carrying the mechanism, is secured to the base of case A and the shaft O is connected to the shaft D by a train of gears, E, motion being imparted to the same by the uncoiling of the spring G. In connection with the shaft D is a fly, F, and gearing with the said shaft by bevel-gears D is vertical shaft F, which is made to gear by the wheel F secured to the top with one or other of the bevel-wheels G or G, and thereby to cause the shaft II to revolve, when required, in either direction, in the following manner: On the shaft H is fixed a worm, J, gearing into wheel J, secured on a shaft on which is a pinion, J gearing into wheel K, to the shaft of which is attached an arm, K, having a rod, K connected thereto, in which is formed a slot through which passes a stud attached to the end of the weighted lever L. To the boss of this lever is secured a toothed quadrant, M, in which gears a small pinion, N, mounted on the end of a lever, 0, prepared with a boss near the center, through which the upper end of the vertical shaft F passes and is supported thereby, the opposite end of the lever at 0 being stayed by a pin, so that by the rotation of the wheel K in either direction the arm K operates the rod K whereby the weighted lever L and quadrant M, the latter gearing with small pinion N, cause the lever O to swing and the pinion N to travel laterally along said quadrant and move the upper end of shaft F laterally, so that its bevel-wheel F gears with the wheel G or G, as required, thus causing the shaft H to rotate in either direction.

On the shaft H is also secured a spur-wheel, P, gearing with the wheel P through an illtermediate wheel, the wheel P being on the shaft carrying the revolving arm Q, and on the last-mentioned shaft is a pinion, R, gearing into a wheel, R, on the shaft of which is a pinion, R gearing into wheel R", the latter being secured on the shaft S, on which are also secured a series of cranks, T, the cranks being of the same number as the balanced arms U and leaves in the book.

Each balanced arm U is mounted on a pin near the end of a crank, T, and the end of each balanced arm at U is prepared with a clip between which is placed a leaf of the book,the opposite end of the arm having a weight, W, for counterbalancing.

On each revolution of the revolving arm Q the end at Q comes in contact with a projection, U, at right angles from the balanced arm, carrying it and the leaf placed between the clip over from one side to the other. During the time the revolving arm Q is carrying a balanced arm, U, from one side of the curved slot at X to X (see Fig. 1, or vice versa) the shaft Sand cranks T are revolving slightly in the same direction, and thereby carrying with them the balanced arms U such a distance that the projection U of the balanced arm that is being carried over is clear of the end of the revolving arm at Q by the time it has traveled from X to X, or vice versa, and the projection U on the next arm will have advanced so far toward the center of the shaft S that the end of the revolving arm at Q on its return to X or X, as the case may be, will come in contact with the same, carrying it and the leaf over from X to X, or vice versa, the same operation being repeated until all have been carried over, when the motion of the rotating arm is reversed in the manner before described. Thus by these means the balanced arms U and book-leaves attached thereto are operated automatically, first in one direction and then in the other.

What I claim is 1. The shaft S, combined with the series of cranks T and corresponding balanced arms, U, arranged substantially as described, wherebyon the rotation of the shaft S the respective projections U are brought nearer and consecutively into the required position on one side the shaft and farther away from the center on the other, for the purpose herein set forth. 7

2. The combination, with the shaft S, having the series of cranks T and the corresponding number of balanced arms U, having projections U, of the revolving arm Q, and operating-gearing connecting the revolving arm with the shaft' having the cranks, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOMAS WALSH TETLEY.

Witnesses:

J NO. GILL, J. HARRISON. 

